IOTA/IOTA-ES occultation update for (8346) 1987 DW6 / HIP 22829 event on 2024 Nov 09, 19:58 UT Visible from Summary ------- On 2024 Nov 09 UT, the 12.978 km diameter asteroid (8346) 1987 DW6 will occult a 10.6 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.67 mag to 18.29 mag (the magnitude of the asteroid) for at most 1.130 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 91 * date and approx. time of event: 2024 Nov 09, 19:50 - 2024 Nov 09, 20:06 * geocentric midpoint of event [JD]: 2460624.33235596 * magnitude of target star: 10.62 * magnitude drop [mag]: 7.67 * estimated maximum duration [s]: 1.130 * Moon: 56 % sunlit, 111° distance * Sun: 152° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 0.50 * 1 sigma uncertainty interval [seconds]: +/- 3.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.003", 83°) * approx speed of asteroid's shadow [km/s]: 11.4958 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 22829 by 8346 1987 DW6 on 2024 Nov 9 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 8 0 0 -29 42 56 20 6 37.4 0 62 -25 -29 38 19 -29 47 33 -29 33 41 -29 52 12 .... 9 0 0 -29 14 57 20 6 37.3 1 61 -26 -29 10 20 -29 19 34 -29 5 42 -29 24 13 0.21 10 0 0 -28 46 57 20 6 37.0 2 61 -27 -28 42 21 -28 51 34 -28 37 43 -28 56 13 0.37 11 0 0 -28 18 57 20 6 36.5 3 60 -28 -28 14 21 -28 23 34 -28 9 44 -28 28 12 0.44 12 0 0 -27 50 58 20 6 35.8 4 60 -29 -27 46 22 -27 55 34 -27 41 45 -28 0 12 0.47 13 0 0 -27 23 0 20 6 34.9 5 59 -30 -27 18 24 -27 27 36 -27 13 47 -27 32 14 0.50 14 0 0 -26 55 4 20 6 33.8 6 59 -31 -26 50 29 -26 59 40 -26 45 52 -27 4 17 0.51 15 0 0 -26 27 11 20 6 32.5 7 59 -32 -26 22 36 -26 31 47 -26 18 0 -26 36 24 0.52 16 0 0 -25 59 22 20 6 31.0 8 58 -33 -25 54 48 -26 3 57 -25 50 12 -26 8 34 0.53 17 0 0 -25 31 38 20 6 29.3 9 58 -34 -25 27 4 -25 36 13 -25 22 28 -25 40 49 0.53 18 0 0 -25 3 59 20 6 27.4 10 57 -35 -24 59 25 -25 8 34 -24 54 50 -25 13 9 0.54 19 0 0 -24 36 27 20 6 25.3 11 57 -36 -24 31 53 -24 41 0 -24 27 19 -24 45 36 0.54 20 0 0 -24 9 1 20 6 23.0 12 56 -37 -24 4 28 -24 13 34 -23 59 54 -24 18 9 0.55 21 0 0 -23 41 43 20 6 20.6 13 56 -38 -23 37 10 -23 46 16 -23 32 37 -23 50 50 0.55 22 0 0 -23 14 33 20 6 17.9 14 55 -39 -23 10 1 -23 19 6 -23 5 28 -23 23 40 0.55 23 0 0 -22 47 33 20 6 15.0 15 55 -40 -22 43 1 -22 52 5 -22 38 29 -22 56 38 0.56 24 0 0 -22 20 43 20 6 12.0 16 55 -41 -22 16 11 -22 25 14 -22 11 39 -22 29 47 0.56 25 0 0 -21 54 3 20 6 8.7 17 54 -42 -21 49 32 -21 58 34 -21 45 1 -22 3 6 0.56 26 0 0 -21 27 34 20 6 5.3 18 54 -42 -21 23 4 -21 32 5 -21 18 33 -21 36 36 0.56 27 0 0 -21 1 18 20 6 1.6 19 53 -43 -20 56 48 -21 5 48 -20 52 18 -21 10 19 0.56 28 0 0 -20 35 14 20 5 57.8 20 53 -44 -20 30 45 -20 39 43 -20 26 15 -20 44 14 0.56 29 0 0 -20 9 24 20 5 53.8 21 53 -45 -20 4 55 -20 13 52 -20 0 26 -20 18 22 0.56 30 0 0 -19 43 47 20 5 49.6 22 52 -46 -19 39 19 -19 48 15 -19 34 51 -19 52 45 0.56 31 0 0 -19 18 25 20 5 45.3 23 52 -47 -19 13 58 -19 22 53 -19 9 30 -19 27 22 0.56 32 0 0 -18 53 19 20 5 40.7 24 51 -48 -18 48 52 -18 57 46 -18 44 24 -19 2 14 0.57 33 0 0 -18 28 28 20 5 36.0 25 51 -49 -18 24 1 -18 32 54 -18 19 34 -18 37 22 0.57 34 0 0 -18 3 53 20 5 31.1 26 50 -49 -17 59 27 -18 8 19 -17 55 1 -18 12 46 0.57 35 0 0 -17 39 35 20 5 26.1 27 50 -50 -17 35 10 -17 44 0 -17 30 44 -17 48 27 0.57 36 0 0 -17 15 35 20 5 20.8 28 49 -51 -17 11 10 -17 19 59 -17 6 45 -17 24 25 0.57 37 0 0 -16 51 52 20 5 15.4 29 49 -52 -16 47 28 -16 56 16 -16 43 4 -17 0 41 0.57 38 0 0 -16 28 28 20 5 9.9 30 49 -53 -16 24 5 -16 32 51 -16 19 41 -16 37 16 0.57 39 0 0 -16 5 23 20 5 4.1 31 48 -53 -16 1 0 -16 9 45 -15 56 37 -16 14 9 0.57 40 0 0 -15 42 37 20 4 58.3 32 48 -54 -15 38 15 -15 46 59 -15 33 52 -15 51 22 0.57 41 0 0 -15 20 11 20 4 52.3 33 47 -55 -15 15 49 -15 24 32 -15 11 27 -15 28 55 0.57 42 0 0 -14 58 5 20 4 46.1 34 47 -56 -14 53 44 -15 2 26 -14 49 22 -15 6 48 0.57 43 0 0 -14 36 19 20 4 39.8 35 46 -56 -14 31 59 -14 40 40 -14 27 38 -14 45 1 0.57 44 0 0 -14 14 55 20 4 33.3 36 46 -57 -14 10 35 -14 19 15 -14 6 15 -14 23 36 0.57 45 0 0 -13 53 52 20 4 26.7 37 45 -58 -13 49 33 -13 58 11 -13 45 13 -14 2 31 0.57 46 0 0 -13 33 10 20 4 20.0 37 44 -58 -13 28 52 -13 37 29 -13 24 33 -13 41 49 0.57 47 0 0 -13 12 51 20 4 13.1 38 44 -59 -13 8 33 -13 17 9 -13 4 15 -13 21 28 0.57 48 0 0 -12 52 54 20 4 6.1 39 43 -59 -12 48 37 -12 57 12 -12 44 19 -13 1 30 0.57 49 0 0 -12 33 20 20 3 59.0 40 43 -60 -12 29 4 -12 37 37 -12 24 46 -12 41 55 0.57 50 0 0 -12 14 9 20 3 51.8 41 42 -60 -12 9 53 -12 18 25 -12 5 36 -12 22 43 0.57 51 0 0 -11 55 21 20 3 44.4 42 41 -61 -11 51 6 -11 59 37 -11 46 50 -12 3 54 0.57 52 0 0 -11 36 57 20 3 36.9 43 41 -61 -11 32 42 -11 41 12 -11 28 27 -11 45 29 0.57 53 0 0 -11 18 57 20 3 29.4 44 40 -61 -11 14 43 -11 23 12 -11 10 27 -11 27 27 0.57 54 0 0 -11 1 21 20 3 21.7 44 39 -62 -10 57 7 -11 5 35 -10 52 52 -11 9 50 0.57 55 0 0 -10 44 9 20 3 13.9 45 39 -62 -10 39 55 -10 48 22 -10 35 41 -10 52 37 0.57 56 0 0 -10 27 21 20 3 6.0 46 38 -62 -10 23 8 -10 31 34 -10 18 55 -10 35 49 0.57 57 0 0 -10 10 59 20 2 58.0 47 37 -63 -10 6 46 -10 15 11 -10 2 33 -10 19 25 0.57 58 0 0 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.022", 0.003", 83.427° remarks: * orbital elements for (8346)1987 DW6 : Mean anomaly = 237.1135255215 deg Arg. of pericenter = 180.3055153630 deg Long. of node = 21.6483753979 deg Inclination = 1.5318573948 deg Eccentricity = 0.1319479451 Semimajor axis = 3.1782187091 AU Perihelion dist = 2.7588592814 AU Mag: H = 13.04, G = 0.15 Epoch of elements : MJD 60623.83235454 TDT (2024 Nov 09.8324) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472023Feb10,1.13,2024,11,9,19.976543,0.027823,-0.492256,-6.477841,-0.372489,-0.002710,-0.000436,0.000001,0.000000 84.9416,24.1375,-123.67,-17.17,False HIP 22829,4.91248603,24.0962670,10.98,10.62,10.43,0.0,0,,4.93798807,24.1375353,7.67,7.42,0,0,0 8346,1987 DW6,18.29,12.978,2.5325,0,0,-1.643,-1.29,,1.2,0 0,236.9687,2024,11,9,180.3055,21.6484,1.5319,0.13195,3.17822,2.75886,13.04,5.0,0.15 1.502,0.0223,0.0033,83,0.0036,Known errors,1.08,0,-1,-1 20241109__22829,60140.69 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:33 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org